Larva and Life History of Togashia horii (Hymenoptera, Tenthredinidae) Feeding on Cornus controversa (Cornaceae) in Honshu, Japan

Abstract

Based on field observations and rearing experiments in Nagano and Niigata prefectures in central Honshu, Japan, we newly describe and illustrate immature stages of the tenthredinid sawfly Togashia horii (Togashi, 1962) and summarize current knowledge on its distribution and life history. The larvae of this species are well characterized by their conspicuous appearance, large size, gregarious feeding behavior and the wood-burrowing behavior on maturity.